2.7.1.2 CarryConnect

CarryConnects are used to build carry chains for arithmetic functions (see Figure 2-36). The FCO output of the right C-cell of a two C-cell Cluster drives the FCI input of the left C-cell in the two C-cell Cluster immediately below it. This pattern continues down both sides of each SuperCluster column.

Similar to the DirectConnects, CarryConnects can be built without an antifuse connection. This connection has a delay of less than 0.1 ns from the FCO of one two C-cell cluster to the FCI of the two C-cell cluster immediately below it (see Carry-Chain Logic for more information).